EP1398861A1 - Circuit onduleur et son procédé d'utilisation - Google Patents

Circuit onduleur et son procédé d'utilisation Download PDF

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Publication number
EP1398861A1
EP1398861A1 EP02405799A EP02405799A EP1398861A1 EP 1398861 A1 EP1398861 A1 EP 1398861A1 EP 02405799 A EP02405799 A EP 02405799A EP 02405799 A EP02405799 A EP 02405799A EP 1398861 A1 EP1398861 A1 EP 1398861A1
Authority
EP
European Patent Office
Prior art keywords
switching
power semiconductor
terminal
group
semiconductor switches
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02405799A
Other languages
German (de)
English (en)
Inventor
Luc Meysenc
Rudolf Wieser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
Original Assignee
ABB Research Ltd Switzerland
ABB Research Ltd Sweden
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ABB Research Ltd Switzerland, ABB Research Ltd Sweden filed Critical ABB Research Ltd Switzerland
Priority to EP02405799A priority Critical patent/EP1398861A1/fr
Publication of EP1398861A1 publication Critical patent/EP1398861A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H02M7/487—Neutral point clamped inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
    • H02H7/1225—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters responsive to internal faults, e.g. shoot-through

Definitions

  • a short circuit the current in the main current path very quickly rises to a high one Current amplitude, so that the current integral assumes impermissibly high values over time.
  • the controllable bidirectional power semiconductor switch can destroy.
  • a suitable method for switching off a controllable bidirectional power semiconductor switch in particular an IGBT with an anti-parallel diode is in DE 199 18 966 A1.
  • the anode-cathode voltage of the controllable bidirectional power semiconductor switch by means of a monitoring device, in particular monitors a desaturation monitoring device. Occurs an illegal Value of the anode-cathode voltage on the main current path, a feedback signal output, which is supplied to the control circuit. In response to the feedback signal the controllable bidirectional power semiconductor switch is then switched off.
  • the object of the invention is therefore to provide a converter circuit that is as possible uncomplicated, robust and less prone to failure. Furthermore, a method for operating a to specify such a converter circuit, which is a simple, insensitive to interference and rapid shutdown of an overcurrent of the converter circuit without monitoring the main current paths of controllable bidirectional power semiconductor switches Inverter circuit enables. These tasks are characterized by the features of the claim 1, 2, 9 and 10 solved. Advantageous developments of the invention are in the subclaims specified.
  • n ⁇ 3 is a capacitor connected in series by n-1 formed DC voltage circuit, which has a first main connection and a second main connection and n-2 by two adjacent and each other connected capacitors has formed partial connections. Furthermore, at least Two partial converter systems are provided, each by a first switching group and one second switching group, each with n-1 controllable bidirectional power semiconductor switches connected in series and by n-2 terminal switching groups, each with two series connected Power semiconductor switches are formed. Each terminal group of a partial converter system is also connected to the first switching group and the second switching group, where the connection point of the power semiconductor switches of each terminal switch group of a partial converter system forms a terminal group connection.
  • the inventive method for Operation of the converter circuit according to the invention thus enables fast and easy detection of an occurring overcurrent of the converter circuit, which then is simply switched off quickly by switching off the converter circuit, it advantageously no monitoring when detecting and switching off the overcurrent the main current paths of the controllable bidirectional power semiconductor switches of the converter circuit requirement. Furthermore, the converter circuit according to the invention can by the inventive method effectively against damage or destruction by the Overcurrent can be protected.
  • the first embodiment of the inventive method for operating the inventive Converter circuit according to the second embodiment one in each Part converter system current flowing by means of between the terminal group connection and the associated switching point of the current sensor switched on, where. when the current is further fed to the current monitoring device of the control circuit and to a current reference value supplied to the current monitoring device is monitored. If the current now exceeds the current reference value, the controllable bidirectional power semiconductor switch of the first switching group and second Switching group of the associated partial converter system can be controlled such that the corresponding partial converter system is switched off.
  • controllable bidirectional power semiconductor switches connected in series controllable bidirectional power semiconductor switches and by n-2, i.e. 1 two, clamping switching groups 8, each with two power semiconductor switches connected in series are formed.
  • the controllable bidirectional power semiconductor switches in each case by a bipolar transistor with an isolated control electrode and a diode connected in antiparallel to it.
  • other controllable bidirectional power semiconductor switches such as Switch-off thyristors or power MOSFETs, each with one anti-parallel switched diode, can use.
  • Each clamping switching group 8 of a partial converter system 5 is the first according to FIG Switching group 6 and the second switching group 7 connected, the connection point of Power semiconductor switch of each terminal group 8 of a partial converter system 5 forms a terminal group connection 9.
  • the converter circuit also includes n-2, i.e. 1 two, interconnection points 10, each interconnection point 10 each Terminal switching group 8 is assigned from each partial converter system 5 and the assigned Terminal groups 8 with the terminal group connections 9 on the associated Interconnection point 10 are interconnected.
  • each interconnection point 10 is in accordance with 1 each connected to a sub-connection 4 assigned to the interconnection point 10.
  • the converter circuit also does not include one in FIG.
  • the number of partial converter systems 5 the number to the converter circuit connectable alternating voltage phases, with each partial converter system 5 has an AC voltage connection 15.
  • three alternating voltage phases are connected to the converter circuit can be connected so that the converter circuit has three partial converter systems 5 having.
  • the converter circuit according to the invention according to FIG. 1 or according to Fig. 2 thus has a high degree of modularity, so that it is easy almost any number of alternating voltage phases to the converter circuit get connected.
  • the power semiconductor switches of the clamping switch groups 8 are the ones according to the invention Converter circuit according to FIG. 1 or according to FIG. 2 preferably designed as a controllable bidirectional power semiconductor switch.
  • Converter circuit according to FIG. 1 or according to FIG. 2 preferably designed as a controllable bidirectional power semiconductor switch.
  • the control circuit 11 of the converter circuit according to the invention will now be discussed in detail, the control circuit being explained with reference to the first embodiment according to FIG. 3 and the second embodiment according to FIG. 4.
  • the control circuit according to FIG. 3 has the current monitoring device 13 already described, such a current monitoring device 13 being generally provided for each current sensor 12, that is to say two current monitoring devices 13 for the first embodiment of the inventive converter circuit according to FIG. 1 and for the second embodiment of the inventive one 2, six current monitoring devices 13 are provided, only one current monitoring device 13 being shown in FIG. 3 for the sake of clarity.
  • Each input of the current monitoring device 13 is also connected to a current sensor 12.
  • a current reference value I ref is also fed to each current monitoring device 13.
  • the current reference value I ref is predetermined manually. This manual specification can be made during the commissioning of the converter circuit or later, for example, by appropriate operating personnel of the converter circuit, so that the current reference value I ref can advantageously be individually adapted to the requirements of the converter circuit.
  • This calculation of the current reference value I ref is carried out from the currents measured at the AC voltage connections 15 and the switching states of the controllable bidirectional power semiconductor switches, as a result of which a lower detection threshold of the current monitoring devices 13 can advantageously be achieved and a rapid and safe disconnection of an occurring overcurrent of the converter circuit can be achieved.
  • the control circuit 11 also has a driver circuit 16 for each controllable bidirectional power semiconductor switch, wherein in FIG. 3 and only one driver circuit 16 is shown in FIG. 4 for the sake of clarity.
  • each Driver circuit 16 is on the output side with the control electrode of the associated controllable bidirectional power semiconductor switch connected.
  • Each driver circuit 16 is furthermore on the input side with the outputs of all current monitoring devices 13 connected, with the control circuit 11 according to FIG. 3 or Fig. 4 for the converter circuit of Fig. 2 each current monitoring device 13 each is assigned to a partial converter system 5.
  • each driver circuit 16 is on the input side connected to the converter control device 14.
  • the control circuit 11 according to FIG. 3 and FIG. 4 thus very simply constructed and thus very robust and little susceptible to interference.
  • the mode of operation of the control circuit 11 is described below in the description of the inventive method for operating the converter circuit according to 1 according to the first embodiment and according to the second embodiment Fig. 2 discussed in more detail.
  • the controllable bidirectional power semiconductor switches In the method according to the invention for operating the converter circuit according to the first 1 are the controllable bidirectional power semiconductor switches the first switching groups 6 and the second switching groups 7 by means of the Control circuit connected to controllable bidirectional power semiconductor switches 11 can be controlled according to the embodiment according to FIG. 3 or FIG. 4.
  • the converter control device 14 gives the driver circuits 16 control signals before, which then in the driver circuits 16 in switching signals for the connected controllable bidirectional power semiconductor switch can be implemented and these are thus controlled.
  • a current i flowing between a switching point 10 and the assigned sub-connection 4 is measured by means of the current sensor 12 switched on between the switching point 10 and the assigned sub-connection 4.
  • the current i of each current sensor 12 is then fed to the associated current monitoring device 13 of the control circuit 11 and monitored for the current reference value I ref supplied to the current monitoring device 13. If the current i exceeds the current reference value I ref , the controllable bidirectional power semiconductor switches of the first switching group 6 and second switching group 7 of each partial converter system 5 are controlled such that the converter circuit is switched off.
  • the power semiconductor switches of the clamping switching groups 8 of the inventive converter circuit according to FIG. 1 which are preferably designed as controllable bidirectional power semiconductor switches
  • the power semiconductor switches of the clamping switching groups 8 of each partial converter system 5 are controlled such that the converter circuit is switched off.
  • the controllable bidirectional power semiconductor switches of the terminal switch groups 8 when the current reference value I ref is exceeded in one or more current monitoring devices 13, the exceeding signal is output by the corresponding current monitoring device or devices 13 to all driver circuits 16, the control signals of the converter control device 14 are blocked in this case.
  • the driver circuits 16 then give corresponding switching signals to the connected controllable bidirectional power semiconductor switches of the terminal switch groups 8, so that all controllable bidirectional power semiconductor switches and thus the entire converter circuit are switched off.
  • possible overcurrents in the terminal switching groups 8 can also be switched off simply and quickly by switching off the converter circuit according to FIG. 1, so that the converter circuit, in particular also the controllable bidirectional power semiconductor switches of the terminal switching groups 8, are thus available Damage or even destruction can be largely protected.
  • the current i of each current sensor 12 is then fed to the associated current monitoring device 13 of the control circuit 11 and monitored for the current reference value I ref supplied to the current monitoring device 13. If the current i exceeds the current reference value I ref , the controllable bidirectional power semiconductor switches of the first switching group 6 and the second switching group 7 of the associated partial converter system 5 are controlled such that the partial converter system 5 is switched off.
  • each current monitoring device 13 of the control circuit 11 according to FIGS. 3 and 4 is assigned to a partial converter system 5, so that for 2 then only the driver circuits 16 of the partial converter system 5, in response to the control signals, give corresponding switching signals for switching off to the connected controllable bidirectional power semiconductor switches, which receive an overshoot signal from the current monitoring devices 13 assigned to this partial converter system 5.
  • controllable bidirectional power semiconductor switches of the first switching group 6 are not and second switching group 7 of each partial converter system 5 are controlled in such a way that all partial converter systems 5 and thus the entire converter circuit are switched off.
  • each current monitoring device 13 of the control circuit 11 according to FIG. 3 or FIG. 4 is assigned to a partial converter system 5, then also only the driver circuits 16 of the partial converter system 5 in response to the control signals corresponding switching signals for switching off to the connected controllable bidirectional power semiconductor switches of the terminal switch groups 8, which receive an overshoot signal from the current monitoring devices 13 assigned to this partial converter system 5.
  • the current reference value I ref is predetermined manually or alternatively calculated by a converter control device 14 .
  • the converter circuit according to the invention provides an uncomplicated, robust and solution that is less susceptible to malfunction.
  • inventive method for operation Such a converter circuit is also shown a solution that a simple, Failure-insensitive and fast shutdown of an overcurrent of the converter circuit without monitoring the main current paths of the controllable bidirectional power semiconductor switches of the converter circuit.
EP02405799A 2002-09-13 2002-09-13 Circuit onduleur et son procédé d'utilisation Withdrawn EP1398861A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP02405799A EP1398861A1 (fr) 2002-09-13 2002-09-13 Circuit onduleur et son procédé d'utilisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02405799A EP1398861A1 (fr) 2002-09-13 2002-09-13 Circuit onduleur et son procédé d'utilisation

Publications (1)

Publication Number Publication Date
EP1398861A1 true EP1398861A1 (fr) 2004-03-17

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EP02405799A Withdrawn EP1398861A1 (fr) 2002-09-13 2002-09-13 Circuit onduleur et son procédé d'utilisation

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005124961A1 (fr) * 2004-06-18 2005-12-29 Abb Schweiz Ag Procede de traitement de defaut dans un circuit convertisseur pour la commutation de trois niveaux de tension

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0512531A2 (fr) * 1991-05-09 1992-11-11 Hitachi, Ltd. Dispositif d'onduleur et système de commande pour un moteur à courant alternatif
JPH08308252A (ja) * 1995-05-11 1996-11-22 Toshiba Corp 電力変換装置
JPH09182461A (ja) * 1995-12-25 1997-07-11 Toshiba Corp Ｎｐｃインバータ装置
US5687049A (en) * 1996-01-26 1997-11-11 International Rectifier Corporation Method and circuit for protecting power circuits against short circuit and over current faults
JPH1132426A (ja) * 1997-07-09 1999-02-02 Shinko Electric Co Ltd インバータの保護装置
JPH11332252A (ja) * 1998-05-08 1999-11-30 Denso Corp マルチレベル形電力変換装置
DE19918966A1 (de) * 1999-04-27 2000-11-02 Daimler Chrysler Ag Verfahren zur Überstromabschaltung eines Bipolartransistors mit isoliert angeordneter Gateelektrode und Vorrichtung zur Durchführung des Verfahrens
US6392907B1 (en) * 1999-06-28 2002-05-21 Kabushiki Kaisha Toshiba NPC inverter control system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0512531A2 (fr) * 1991-05-09 1992-11-11 Hitachi, Ltd. Dispositif d'onduleur et système de commande pour un moteur à courant alternatif
JPH08308252A (ja) * 1995-05-11 1996-11-22 Toshiba Corp 電力変換装置
JPH09182461A (ja) * 1995-12-25 1997-07-11 Toshiba Corp Ｎｐｃインバータ装置
US5687049A (en) * 1996-01-26 1997-11-11 International Rectifier Corporation Method and circuit for protecting power circuits against short circuit and over current faults
JPH1132426A (ja) * 1997-07-09 1999-02-02 Shinko Electric Co Ltd インバータの保護装置
JPH11332252A (ja) * 1998-05-08 1999-11-30 Denso Corp マルチレベル形電力変換装置
DE19918966A1 (de) * 1999-04-27 2000-11-02 Daimler Chrysler Ag Verfahren zur Überstromabschaltung eines Bipolartransistors mit isoliert angeordneter Gateelektrode und Vorrichtung zur Durchführung des Verfahrens
US6392907B1 (en) * 1999-06-28 2002-05-21 Kabushiki Kaisha Toshiba NPC inverter control system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JIH-SHENG LAI ET AL: "Multilevel converters-a new breed of power converters", INDUSTRY APPLICATIONS CONFERENCE, 1995. THIRTIETH IAS ANNUAL MEETING, IAS '95., CONFERENCE RECORD OF THE 1995 IEEE ORLANDO, FL, USA 8-12 OCT. 1995, NEW YORK, NY, USA,IEEE, US, 8 October 1995 (1995-10-08), pages 2348 - 2356, XP010193247, ISBN: 0-7803-3008-0 *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 02 29 February 2000 (2000-02-29) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005124961A1 (fr) * 2004-06-18 2005-12-29 Abb Schweiz Ag Procede de traitement de defaut dans un circuit convertisseur pour la commutation de trois niveaux de tension
JP2008503194A (ja) * 2004-06-18 2008-01-31 アーベーベー・シュバイツ・アーゲー 三つの電圧レベルのスイッチングのためのコンバータ回路における漏電処理のための方法
CN100456592C (zh) * 2004-06-18 2009-01-28 Abb瑞士有限公司 在切换三个电压电平的转换器电路中进行故障处理的方法
US7508640B2 (en) 2004-06-18 2009-03-24 Abb Schweiz Ag Method for fault handling in a converter circuit for wiring of three voltage levels

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